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| author | Alexander Graf <agraf@suse.de> | 2009-04-14 16:20:50 +0200 |
|---|---|---|
| committer | hyokeun <hyokeun.jeon@samsung.com> | 2016-09-06 15:55:30 +0900 |
| commit | cd52d9ae46e8c54070860b1bfb7144a2d6ab6219 (patch) | |
| tree | 849855964c94eec43bd84cce125963eba9877dce | |
| parent | 1d2991d10b7ac99657a3d37f8fa1fae5f233eed8 (diff) | |
| download | qemu-cd52d9ae46e8c54070860b1bfb7144a2d6ab6219.tar.gz qemu-cd52d9ae46e8c54070860b1bfb7144a2d6ab6219.tar.bz2 qemu-cd52d9ae46e8c54070860b1bfb7144a2d6ab6219.zip | |
qemu-cvs-alsa_bitfield
Implements TYPE_INTBITFIELD partially. (required for ALSA support)
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Ulrich Hecht <uli@suse.de>
| -rw-r--r-- | include/exec/user/thunk.h | 3 | ||||
| -rw-r--r-- | thunk.c | 21 |
2 files changed, 24 insertions, 0 deletions
diff --git a/include/exec/user/thunk.h b/include/exec/user/thunk.h index f19ef4b23..b2659e0de 100644 --- a/include/exec/user/thunk.h +++ b/include/exec/user/thunk.h @@ -37,6 +37,7 @@ typedef enum argtype { TYPE_ARRAY, TYPE_STRUCT, TYPE_OLDDEVT, + TYPE_INTBITFIELD, } argtype; #define MK_PTR(type) TYPE_PTR, type @@ -89,6 +90,7 @@ static inline int thunk_type_size(const argtype *type_ptr, int is_host) case TYPE_SHORT: return 2; case TYPE_INT: + case TYPE_INTBITFIELD: return 4; case TYPE_LONGLONG: case TYPE_ULONGLONG: @@ -151,6 +153,7 @@ static inline int thunk_type_align(const argtype *type_ptr, int is_host) case TYPE_SHORT: return 2; case TYPE_INT: + case TYPE_INTBITFIELD: return 4; case TYPE_LONGLONG: case TYPE_ULONGLONG: @@ -37,6 +37,7 @@ static inline const argtype *thunk_type_next(const argtype *type_ptr) case TYPE_CHAR: case TYPE_SHORT: case TYPE_INT: + case TYPE_INTBITFIELD: case TYPE_LONGLONG: case TYPE_ULONGLONG: case TYPE_LONG: @@ -139,6 +140,26 @@ const argtype *thunk_convert(void *dst, const void *src, case TYPE_INT: *(uint32_t *)dst = tswap32(*(uint32_t *)src); break; + case TYPE_INTBITFIELD: +#if defined(TARGET_I386) && defined(__powerpc__) + /* powerpc uses the MSB, whereas i386 uses the LSB + * to store the first bit in a field */ + { + unsigned char byte = *(uint8_t *)src; + *(uint8_t *)dst = ((byte >> 7) & 1) + | ((byte >> 5) & 2) + | ((byte >> 3) & 4) + | ((byte >> 1) & 8) + | ((byte << 1) & 16) + | ((byte << 3) & 32) + | ((byte << 5) & 64) + | ((byte << 7) & 128); + /* FIXME: implement for bitfields > 1 byte and other archs */ + } +#else + *(uint32_t *)dst = tswap32(*(uint32_t *)src); +#endif + break; case TYPE_LONGLONG: case TYPE_ULONGLONG: *(uint64_t *)dst = tswap64(*(uint64_t *)src); |